111211313131 has 8 divisors (see below), whose sum is σ = 111351429504. Its totient is φ = 111071259840.

The previous prime is 111211313123. The next prime is 111211313153. The reversal of 111211313131 is 131313112111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111211313131 - 2³ = 111211313123 is a prime.

It is a super-2 number, since 2×111211313131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111211313099 and 111211313108.

It is not an unprimeable number, because it can be changed into a prime (111211313111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4200471 + ... + 4226863.

It is an arithmetic number, because the mean of its divisors is an integer number (13918928688).

Almost surely, 2^111211313131 is an apocalyptic number.

111211313131 is a deficient number, since it is larger than the sum of its proper divisors (140116373).

111211313131 is a wasteful number, since it uses less digits than its factorization.

111211313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31541.

The product of its digits is 54, while the sum is 19.

Adding to 111211313131 its reverse (131313112111), we get a palindrome (242524425242).

The spelling of 111211313131 in words is "one hundred eleven billion, two hundred eleven million, three hundred thirteen thousand, one hundred thirty-one".